Jak rozpoznać Koza

Aby rozpoznać Koza (Cobitis taenia), zwróć uwagę na te kluczowe cechy.

Cechy fizyczne

Kształt ciała

elongated

Ubarwienie

Dorsal side is typically yellowish-brown to olive-green, with a series of 10-20 dark, oval spots or blotches along the lateral line. The ventral side is paler, often whitish or yellowish. Fins are usually translucent with faint spotting.

Rodzaj łusek

cycloid

Ułożenie pyska

inferior

Cechy charakterystyczne

Slender, eel-like body, laterally compressed., Six barbels around the mouth (two rostral, four maxillary)., A prominent, erectile, bifid spine beneath each eye., Small, embedded scales, giving a smooth appearance., Sexual dimorphism: Males possess a thickened pectoral fin ray (Canestrini's scale) and are generally smaller and more slender than females.

Płetwa grzbietowa

Short, located posterior to the midpoint of the body, with 7-8 branched rays.

Płetwa ogonowa

Truncate or slightly emarginate, with 12-14 branched rays.

Płetwa piersiowa

Small, rounded, with 7-8 rays. Males have a distinct Canestrini's scale on the second ray.

Charakterystyczne płetwy

Pelvic fins are small, abdominal, with 5-6 rays. Anal fin is short, with 5-6 branched rays.

Wskazówki dotyczące identyfikacji

1. 1

   Body Shape and Size

   Elongated, slender body, typically reaching 8-12 cm in length, rarely up to 15 cm. Laterally compressed.

2. 2

   Coloration and Pattern

   Yellowish-brown to olive-green back with a row of dark, oval spots along the lateral line. Pale belly.

3. 3

   Suborbital Spine

   Presence of a sharp, erectile, bifid spine beneath each eye. This is a key diagnostic feature.

4. 4

   Barbels

   Six small barbels around the mouth, used for foraging in the substrate.

5. 5

   Scales

   Very small, embedded scales, making the skin appear smooth.

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